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Update ssl-certificate-expiry to allow legacy renegotiation #1340

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Update ssl-certificate-expiry to allow legacy renegotiation #1340

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2 changes: 2 additions & 0 deletions plugins/ssl/ssl-certificate-expiry
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ To set warning and critical levels do like this:
env.proxy PROXYHOST:PORT # optional, enables openssl operation over proxy
env.checkname yes # optional, checks if used servername is covered by certificate
env.skip_cert_hashes 2e5ac55d # optional, skip check of certs with those hashes (2e5ac55d is DST Root CA X3, cross-signing Let's Encrypt certs, but expiring on 2021-09-30)
env.legacy_renegotiation yes # optional, allow unsafe renegotiation when connecting to older systems.

Alternatively, if you want to monitor hosts separately, you can create multiple symlinks named as follows.

Expand Down Expand Up @@ -136,6 +137,7 @@ print_expire_days() {
[ -n "$starttls" ] && s_client_args="$s_client_args -starttls $starttls"
[ -n "${proxy:-}" ] && s_client_args="$s_client_args -proxy $proxy"
[ -n "${checkname:-}" ] && [ "$checkname" = "yes" ] && s_client_args="$s_client_args -verify_hostname $host"
[ -n "${legacy_renegotiation:-}" ] && [ "$legacy_renegotiation" = "yes" ] && s_client_args="$s_client_args -legacy_renegotiation"

# We extract and check the server certificate,
# but the end date also depends on intermediate certs. Therefore
Expand Down